Claim: Valvoline Restore & Protect, the first and only motor oil that removes up to 100% of deposits – restoring your engine to run like new.
You supposed to run 4 consecutive oil changes and it should clean pistons (and else?) to factory original. The oil was designed NOT to clog the oil filter like other heavy cleaning detergent additives may, thus the slower 4 oil change requirement.
Any proof did anyone find? Or personal experience?